Infrared multiphoton dissociation spectrum of isolated protonated 1-azapyrene
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Author | |
Abstract |
The infrared spectrum of protonated 1-azapyrene has been obtained by infrared multiphoton dissociation (IRMPD) spectroscopy using a Fourier-transform ion cyclotron resonance mass spectrometer coupled to an infrared tunable free electron laser. Found when electrospraying a pyrene/methanol/acetic acid solution, the carrier of the dominant m/z 204 peak was determined by comparison of the IRMPD spectrum with density functional theory calculations (B3LYP/6-31G(d, p)). The greater proton affinity and solubility of 1-azapyrene explains the competitive protonation of azapyrene over pyrene despite its apparent smaller abundance in the electrospray solution. The possible contribution of 1-azapyrene to the interstellar infrared emission bands is briefly discussed. (C) 2009 Published by Elsevier B. V. |
Year of Publication |
2009
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Journal |
Chemical Physics Letters
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Volume |
473
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Number |
1-3
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Number of Pages |
43-48
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Date Published |
Apr
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Type of Article |
Article
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ISBN Number |
0009-2614
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Accession Number |
ISI:000265270800009
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URL | |
PId |
2b2eeb8b0493e10f5230362bf933aebd
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Alternate Journal |
Chem. Phys. Lett.
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Journal Article
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